this post was submitted on 07 Nov 2024
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Where to Mount NFS Shares and Where to Keep Docker-Compose (lemmy.world)
submitted 1 week ago by njordomir@lemmy.world to c/selfhosted@lemmy.world
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Hi folks,

You all have been instrumental to my self-hosting journey, both as inspiration and as a knowledge base when I'm stumped despite my research.

I am finding various different opinions on this and I'm curious what folks here have to say.

I'm running a Debian server accessible only within the home with a number of docker images like paperless-ngx, jellyfin, focalboard, etc. Most of the data actually resides on my NAS via NFS.

  1. Is /mnt or /media the correct place to mount the directories. Is mounting it on the host and mapping the mount point to docker with a bind the best path here?

  2. Additionally, where is the best place to keep my docker-compose? I understand that things will work even if I pick weird locations, but I also believe in the importance of convention. Should this be in the home directory of the server user? I've seen a number of locations mentioned in search results.

  3. Do I have to change the file perms in the locations where I store the docker compose or any config files that don't sit on the other end of NFS?

Any other resources you wish to share are appreciated. I appreciate the helpfulness of this community.

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[–] scrubbles@poptalk.scrubbles.tech 19 points 1 week ago (9 children)

I wouldn't worry about mounting your nfs shares directly to those host unless you need to. Compose has an operator similar to k8s that lets docker itself manage the shares, which is insanely useful if you lose your host. Then you don't have to have piles of scripts to mount them.

https://stackoverflow.com/questions/45282608/how-to-directly-mount-nfs-share-volume-in-container-using-docker-compose-v3

version: "3.2"

services:
  rsyslog:
    image: jumanjiman/rsyslog
    ports:
      - "514:514"
      - "514:514/udp"
    volumes:
      - type: volume
        source: example
        target: /nfs
        volume:
          nocopy: true
volumes:
  example:
    driver_opts:
      type: "nfs"
      o: "addr=10.40.0.199,nolock,soft,rw"
      device: ":/docker/example"
[–] KyuubiNoKitsune@lemmy.blahaj.zone 1 points 1 week ago* (last edited 1 week ago) (1 children)

I found this to be extremely underperforming. If you plan on doing anything that requires high throughput, don't use the docker NFS operator.

[–] mbirth@lemmy.ml 2 points 1 week ago (1 children)

There’s no difference between using a volume in Compose to mount a share or your server’s fstab file. Both do the same kind of mount.

[–] KyuubiNoKitsune@lemmy.blahaj.zone 1 points 1 week ago (1 children)

It's doing something different, I was using to mount an AWS FSx for ZFS share on a beefy machine (1.2GB/s network throughput) and was getting less than 50MB/s throughput using docker to mount it, but getting the full 1.2GB/s when mounted outside and mapped to a volume in the container.

[–] mbirth@lemmy.ml 1 points 1 week ago (1 children)

How did you mount it outside the cluster? Did you have a look at the mtab and used the exact same options in the compose file?

[–] KyuubiNoKitsune@lemmy.blahaj.zone 1 points 1 week ago

It's been a few months but I as far as I remember used all the same mounting options

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